A rapper was attacked onstage during a Wednesday performance.XXXTentacion said on Twitter he was sucker punched during his show at Observatory North Park. Video showed he was knocked to the ground before security intervened.According to police, one person was stabbed at some point, but the injury was not considered life-threatening, The San Diego Union-Tribune reported.

SAN DIEGO —

A rapper was attacked onstage during a Wednesday performance.

XXXTentacion said on Twitter he was sucker punched during his show at Observatory North Park. Video showed he was knocked to the ground before security intervened.